Britain's permanent representative to the European Union Tim Barrow, left, hands British Prime Minister Theresa May's Brexit letter in notice of the UK's intention to leave the bloc under Article 50 to EU Council President Donald Tusk on March 29, 2017. (Yves Herman/Pool Photo via AP)
The United Kingdom officially filed for divorce from the European Union on Wednesday, setting off a controversial and complicated process that is expected to take two years.
Here & Now's Jeremy Hobson speaks with CNN's Maggie Lake (@maggielake) about what some of the obstacles will be.
